/*
 * Copyright 2018 flow.ci
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *    http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.flowci.core.common.adviser;

import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;
import org.springframework.web.bind.annotation.RequestMethod;
import org.springframework.web.servlet.HandlerInterceptor;

/**
 * @author yang
 */
public class CrosInterceptor implements HandlerInterceptor {

    private static final String AllowedHeaders =
        "Origin, X-Requested-With, Content-Disposition, Content-Type, Accept, Token, Authorization";

    public boolean preHandle(HttpServletRequest request, HttpServletResponse response, Object handler) {
        response.setHeader("Access-Control-Allow-Origin", "*");
        response.setHeader("Access-Control-Allow-Methods", "GET, POST, PATCH, OPTIONS, DELETE");
        response.setHeader("Access-Control-Max-Age", "1800");
        response.setHeader("Access-Control-Allow-Headers", AllowedHeaders);
        response.setHeader("Access-Control-Expose-Headers", AllowedHeaders);

        if (request.getMethod().equals(RequestMethod.OPTIONS.name())) {
            return false;
        }

        return true;
    }
}
